A box contains 5 red and 5 blue balls. Two balls are drawn one by one WITH replacement. What is the probability that both are red?
A1/4
B1/2
C3/4
D1/5
Explanation
P(1st Red) = 5/10 = 1/2. With replacement, P(2nd Red) = 5/10 = 1/2. Combined P = 1/2 * 1/2 = 1/4.
Exam Relevance
- Topic: Probability
- Subtopic: With Replacement
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